Gas burner



Patented Sept.` 13, 1927.-

UNITED STATES PATENT OFFICE.

WILLIAMwWVALLACE KEMP, OF BALTIMORE, MARYLAND, ASSIQNOB TO THE C. M.KEMP MANUFACTURING COMPANY, OF BALTIMORE, MARYLAND, A CORPORATION OFMARYLAND.

GAS BURNER.

This invention relates to gas ,burnershand more particularly to burnersespecially adapted for use in connection with bakin ovens, although notlimited to this specia 5 use. y

An object of the invention is to provide a construction whereby thevolume of fuel and air mixture admitted to the severalburner jetopenings of the burner maybe indel pendently controlled.

Another object is to provide a burner with control means outside of theoven for regulating the fuel to the several sections of the burner,whereb the heatfrom one. orv more l sect-ions may be varied withoutdisturbing the other sections.

Another object of the invention is to provide a burner constructionconsistin yof a plurality of substantially concentrlca y arranged tubesleading from a common fuel manifold to separate fuel spaces or burnercompartments, the burner having independent-ly adjustable meansforregulatmg the amount of fuel admitted to each compart- I ment. v

A further object is to provide a burner which. is. simple and compact instructure and will occupy av minimum amount of space. Certaindetailfeatures of the invention herewith shown and described butrnotspecifically claimed, are embodied in copending application Serial No.160,908, filed January 13, 1927. l I.

The above and other objects of the invennection with the description ofthe embodiments of the invention lllustrated -m the accompanyingdrawings, in which: 1

Figure 1 is a longitudinal section throughj' 5 of another form ofburner.

the

Figure 7 is a cross section taken on line 7-7 of Figure 6.

t' l tion will be more clearly set forth 1n conspec Ivey Figure 8 is acentral llongitudinal section` head 11 at 'its inlet end and a head 12at' rt-ured discs its opposite end. A series of a 13, 14 and 15 aredisposed wlthin the tube 10 and form partitions, providing a pluralityvof longitudinally arranged fuel chambers 16, 17, 18 and 19.

The head 11 is recessed to form a fuelmanifold chamber 21 adapted toreceive fuel,l

from a supply pipe (not shown), which may be threaded thereinto. Theopposite or inner face of the head is stepped, each said stepped portionhaving an orifice or fuel.

passage 21 extending therethrough, which communicates withconcentrically arranged,

longitudinally extending tubes 22, 23, 24 and 25', each oa differentlength. The central tube 25 issupported at one end by the centercircular projection on the inner face of head l1, the opposite end beingflanged, as at 26, which Bange rests against the head 12. Each of theshorter tubes is 'supported at one end by a portion of the stepped faceof the head with its opposite end supported by a partition wall or disk13, 14 and 15 re- The partitions serve the dual function of supportingthe several tubes, and of dividin the burner into separate chambers. Eac

with a series of discharge' orifices 27; these serve as outlets for thefuel from the several tube is provided adjacent its, end, which isexposed within a chamber, x

tubes direct to the respective surrounding" to direct-the fueldownwardly or away fromthe jet openings 10 so that it must trajvelV aconsiderable distance through the cham; bers before issuing therefrom.In this form of the invention, the volume of fuel andi air mixture isrojected from the tubes to sgibstantially e base of 'each chamber,

the center of the sleeve. 40 the sleeve 33 co-operate with internal mustreverse its direction to reach the burner threaded into the under sideof the vouter openings; thus insuring a thorough distribution ofthevolume of the mixture.

Independentcontrol and regulating valves 29 exteriorly threaded andmounted in threaded openings 30 formed in the head 1l, one for each tubeand its respective chamber, serve to independently control the volume offuel and air mixture admittedto the 1U tubes and chambers through thepassages 21,

so as to vary the iiame on some sections Without disturbing othersections.

It will be noted in Figure 1, that the burner shown therein is supported-in an l5 opening formed in the wall A of an ovenand that the burnersections and the head 12 are within the oven, whereas the control valves29 carried by the head 11 are outside of the oven. By arranging theburner in this manner, with the control valves outside of the oven, suchvalves are accessible at all times, and by manipulating them, the' heaton one or more of the burner sections may be varied without disturbingothersections. This is particularly desirable in the v lindrical casing,within which casing 1s disosed, substantially concentrically, an innerel manifold tube 32. The casing and man,

ifold tube are made in sections united at intervals throughout theirlength, and between the sections there is provided an exteriorlythreaded sleeve or thimble 33, havmg longitudinal slots 33 extendinginwardly from each' end to a point adjacent The threads of threads 34formed" at the end of each section of the casings 3l to unite the casingsections. t will be seen that,-by reason of the provision of slots 33',the volume of fuel and air mixture is enabled to reach and be emittedfrom the burner jets 38 ad- ]acent the 'meeting ends of each section ofthe cylindrical casing 31. With such an arrangement of parts, it ispossiblevto distrib-` 60 ute thefuel jets or openings 38 throughout thelength of the various sections of the rburner. The sleeves serve aspartitions, thereby dividing the space between the manlfold and casinginto burner chambers 35;

and also function to maintain the manifold tube sections, havingabutting ends, properly spaced from the casing'wall.

(was is admitted to the manifold tube 32 from any suitable supply, (notshown) arranged to connect with either end of the pendently operableneedle valves 37, screwcasing 37, each valve having a slot 37 in itsbase for actuating it. The valves function l in precisely the samemanner as the valves 29 illustrated in Figures 1 and 3.

Referring to Figures 6 and 7, 40 indicates a pipe into and through whichgas is con-V ducted to the burner casing 41,A which burner is,preferably, in the form of a substantially cylindrical tube. Ahorizontal partition wall 42 having spaced orifices 43 therethrough,divides 4the burner into a Jlower fuel manifold chamber 44 and upper,burner 'chamber which is sub-divided by ltransverse partitions 45 intoburner cham-l bers 46, the said wall extending longitudinally throughoutthe length of the burner. Needle valves, in' the form of cylindricalplugs 47, exteriorly screw threaded, are adjustably mounted in screwthreaded openings 48 formed in the wall of the burner,

and extend across the fuel chamber 44 into the orifices 43 to regulateand control the 'passage of fuel from the fuel chamber to the upperburner chambers.` Each valve member is provided in its base with a slot47 adapted to receive a screw driver or u similar tool for adjusting itwith respect to its seat formed by the orilice 43 in the partition Wall42. Formed in the burner top are jet openings 48. These openings aredisposed at intervals throughout the length of the burner.

Gas from the inlet pipe 40 passes into the fuel manifold 44, through theorifices to the upper burner chambers, from which it is emitted throughthe openings 48 in the form of a highly intensified flame.

By the Jprovision of adjustable valves 47, whosev conical upper ends areadaptedl to seat in with the orifices 43, it is possible to regulate toa very tine degree the amount of fuel passing to the chambers 46 andopenings 48.

In the modification' shown in Figures 8' and 9, 50 indicates the mainfuel supply manifold, 51 the burner tube, having jet openings 51 and 52short tubes or nipples connecting the manifold and the burner tube. Theends of the short tubes are screw threaded intov the manifold and.burner tubes, and each tube has formed in its lower endV a conical seat53. Threaded through the base of the manifold immediately below eachshort tube is ascrew threadedsneedle valve 54 of the form employed inconnection with the burners of Figures 4 to7. Each tube 52 communicateswith one of the chambers 55, 56, 57 and 58 which are formed in theburner tube bythe provision of transverse partitions 49, arranged atintervals throughout the length of the tube.

In igure 10, the particular form of exteriorly threaded connectingsleeve 33 is illustrated. This sleeve is provided at one riphery withlongitudinal portion of its from each end slots 33,' exten mg inwardly`and terminating short of the center of the fuel openings, t e fiameemitted from the ff munication various sections is substantiallycontinuous.

This is particularly ldesirable so that when the issuing gas is ignitedat one end of the burner, the iime will flash entirely along the burner.s

In all of the forms hereinbefore described, it will be seen that themixture of gas and air is fed to each burner chamber having jetopenings, from a common source of supply, such as a. manifold, the meansof combetween the manifold and the f several chambers being variable.The prefarable form, however, ,is that illustrated in Figures l, 2 and3, wherein the manifold is at one end of the casing and is connectedwith the several chambers by va series of concentric tubes extendinglongitudinally through the burner casing, and each having openingsthrough which the fuel is introduced into each chamber, preferably in aprovided in each instance for the purpose of direction away from its jetopenings. A separate independently adjustable valve is regulating theamount of fuel mixture supplied to each burner. By the use of theseindependently controlled valves, it is possible to control the admissionof fuel and air i vmixture to each chamber whereby the iame'.

on some sections may be varied without disturbing the flame on othersections.

It is, of course, understoodthat it is withinvthe spirit of thepresent-invention to make various other changes or modifications in theabove described constructions withiny the scope of the appended claims,and alsothat theburners illustrated in the drawings, while 'casing andaving dischar e openings thereparticularly adapted' for use inconnection with ovens for baking bread or cake, are not' to be liniitedto this specific use, but may be employed in connection with ovens andstoves of various types, or put to any other use for which theirparticular constructions are adapted.

I claim:

1. A gas'burner comprising an elongated casing provided with Jetopenings, a plurality of concentricallv arranged tubes disposed withinsaid casing and having-orifices i therein, a head at one end of thecasing forming a manifold communicating with each tube, the said casinghaving partition walls therein formin independent burner chambers, thetubes elivering to independent chambers, and a series of adjustablevalves for regulating independently the amount of fuel admittedto eachtube.

2. A gas burner comprising an elongated casing provided with jetopenlngs, a plurality 'Pof coaxially arranged tubes of progressivelyincreasing lengths disposed Within saidA casing and having orificesltherein, a head at one end of the casing forming a manifoldcommunicating with each tube,

longitudinally spaced partition membersI mounted within the casing andforming separate chambers for each of the tubes, and a series ofadjustable valves for regulating independently the amount of fueladmitted to each tube.

3. A gas burner comprising an elongated casing'provided with )etopenings, a plurality of-concentrically arran ed tubes dis -posed withinsaid casing and aving orifices therein, a headat 'one end of the casingforming a manifold communicating with each tube, the said casing havingpartition Walls therein forming independent burner chambers, the tubesdelivering to independent chambers, and a series of independentlyadjustable valves in said head for regulating the amount of fueladmitted to the tubes.

4. A gas burner formed of a plurality of concentrically arranged tubesof different lengths,'a casing surrounding said tubes and havingdelivery \orifices therein` spaced` transverse partition walls withinthe casing forming independent burner chambers, a head at one end ofthecasing having orifices therethrough communicating with each of saidtubes respectively, said tubes having openings communicating withindependent c a mbers, and valves arranged within the head{ -forcontrolling independently tht amount of fuel mixture admitted to each o1said tubes.

5. A gas burner comprising'an elongated casing provided with )etopeninis, at one end of the casin having or' ces theref throughjiconcentricaqly arranged tubes ces .e res ctively positioned within thein, apertured plates Awithin the casing engaging the tubes and formingseparate burner compartments around the tubes, and

in provided with jet o nings, a series of tu extending longitu inallyinto the casing, a head for the casing having fuel passages therethrouhadapted to communicatewith each of sai tubes respectively, transadiptedto V'receive fuel through each of said 01'1 115 rately 4with each ofsaid tubes respective tition walls arranged withinvthe casing andforming a pluralitybf burner chambers, anda series of independentlyadjustable valves on said head for regulatmg the.

amount of fuel mixture admitted tothe tubes, said tubes beingconcentrically arran ed and having fuel discharge openings lea ing toseparate chambers.

'8, A gas burner having an elongated casing provided with jet openings,a series of tubes extending longitudinally intov the casing, a head forthe casin having fuel passages4 therethrough adapte Y to communicate`with said'tubes, transverse partition walls arranged within the casingand forming a plurality of burner com artments, and

a series of independently adjustable valvesr for regulating the amountof fuel mixture admitted to the tubes from said head, the

tubes .having discharge openings communi-4 eating with-"saidcompartments/'said discharge openings introducing'the fuel into saidcompartments in a direction substantially opposite'to that of the jetopenings.

' 9. A as burner comprising a casing provided with jet openings, aplurality of tubes extending into the casing, a head forthe casinghavingta plurality offuel passages therethrough adaptedto communicateseparately withv each of said tubes, the outer face of said head vbeingrecessed to form a fuel supply manifold, transverse partition -wallsarranged within the casin and4 forming a plurality of burner cham rs,and a series of independently adjustable valves on said head forregulatin the amount of fuel mixture admitted to t e tubes, said tubesbeing concentrically arranged and having fuel discharge openings leadingto separate chambers.

'10. A gas burner comprising avcasing provided with jet openings, aplurality of concentric tubes of different lengths extendinglongitudinally Within the casing and supported therefrom, a head for thecasing having fuel passages therethrough, said head being recessed toform a. fuel manifold and supporting an end of each tube, transversepartition walls arranged Within the casing,

said walls supporting the opposite end of each tube and forming indeendent burner chambers, and a series of in ependently adjustable valvesin said head for regulating etA the amount of fuel mixture admitted tothe tubes, said tubes having discharge orifices djacent their endsleading to-separate chamers. l l

11. A gas burner having a casing provided with jet openings, a pluralityof concentric tubes of different lengths' extending through the casing,a head for the casing forming a fuel manifold, said head supporting oneend of each of said tubes and having fuel passages therethrough adaptedto communicate with each of the tubes, transverse partition walls withithe casing, said walls supporting an end of each of said tubes andforming separate burnercom artments, and independently adjustable va vesextending into said head to control the passage of fuel to each tube,eachof the tubeshaving adjacent one end a portion exposed Within aburner compartment and provided with openings forl discharging fuel-thereinto.

12. The combination with the wall of an oven, of a burner extendingthrough and supported by said wall, said burner having flame orificestherein on one side of the Wall, a plurality of tubes'ofdiiferentlengths mounted, in said burner, partitions within the burnerforming a serles of separate chambers for each of said tubes, and meanson the opposite side of the wall for inde-- pendently controlling thesupply of fuel to each of said chambers.

In testimony whereof I have hereunto set my hand. p'

WILLIAM WALLACE KEMP.

